<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <link rel="stylesheet" href="./css/index.css" />
  </head>
  <body>
    <div class="container">
      <ul class="top">
        <!-- 基础模板 -->
        <!-- <li>
          <a href="javascript:;">首页</a>
          <ul class="sub">
            <li>
              <a href="javascript:;">
                <span>砂锅厨具</span>
                <img src="https://yanxuan.nosdn.127.net/3102b963e7a3c74b9d2ae90e4380da65.png?quality=95&imageView" alt="">
              </a>
            </li>
          </ul>
        </li> -->
      </ul>
    </div>
    <script src="./axios.js"></script>
    <script>
      window.onload = function(){
        axios({
          url:'http://ajax-api.itheima.net/api/category/top',
        }).then((res) => {
          console.log('res',res.data.data)
          const arr = res.data.data.map((item) =>{
            return axios({
              url:'http://ajax-api.itheima.net/api/category/sub',
              params:{
                id:item.id
              }
            })
          })
          Promise.all(arr).then((twoRes)=> {
            console.log('res九次请求结果',twoRes)
            const str = twoRes.map((v) => {
              return `<li>
                <a href="javascript:;">${v.data.data.name}</a>
                  <ul class="sub">
                    ${v.data.data.children.map((twoItem) => {
                      return `
                      <li>
                        <a href="javascript:;">
                        <span>${twoItem.name}</span>
                        <img src="${twoItem.picture}" alt="">
                        </a>
                      </li>
                      `
                    }).join('')}
                  </ul>
              <li>`
            }).join('')
            document.querySelector('.top').innerHTML = str
          })
        })
      }
    </script>
  </body>
</html>
